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模拟和实验研究基于不同提取剂的煤焦油残留的固体液体提取

Bo Yang¹, Xiaoyong Fan^1,2, Dong Li²

¹School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, Yulin University, Yulin 719000, People's Republic of China.

|December 25, 2023

概括

这项研究模拟了使用乙烯酸乙烯,乙醇和n-hexane的煤焦油残留物 (CTR) 提取. 开发的模型准确地预测了提取率,使这种危险废物的有效工业利用成为可能.

科学领域:

化学工程是化学工程的重要组成部分.
环境科学环境科学
材料科学材料科学材料科学

背景情况:

煤焦油残留物 (CTR) 是一种富含有毒多环芳 (PAHs) 的危险工业废物.
通过分离煤焦油来提升CTR的价值为高价值燃料和化学品提供了一条途径.
有效地将煤焦油与CTR分离,对于其可持续利用至关重要.

研究的目的:

开发和验证一种数学模型,用于从CTR中提取煤焦油的固体液体.
研究不同溶剂 (乙酸乙烯,乙醇,n-hexane) 对提取过程的影响.
确定最大限度地提高煤焦油开采效率和产品选择性的最佳条件.

主要方法:

固体-液体提取实验使用乙烯酸乙烯,乙醇和n-hexane作为提取剂进行.
基于Fick的第二定律建立了一个数学模型来描述质量转移和扩散.
气色谱-质谱法 (GC-MS) 用于分析提取的组件的组成.

主要成果:

确定了每种溶剂在35°C的质量转移和有效扩散系数.
数学模型在预测实验提取结果方面表现出高准确度.
n-Hexane 显示出对异性碳化合物的提取率最高,氧化化合物的乙烯酸乙烯和芳香碳化合物的乙醇.

结论:

开发的数学模型为CTR固体液体提取提供了准确的预测.
溶剂的选择对提取的煤焦油成分的类型和数量产生重大影响.
这些发现支持通过优化溶剂提取进行CTR增值的工业应用.

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